raised-face flange
... plain flange 对接法兰 raised-face flange 凸面法兰 recesed flanged joint 埋头法兰接头 ...
male flange
... male flange 凸面法兰 male infertility 不育症 ; 男性不孕 ; 男性不育症 ; 雄性不育 complementary male 助雄 ...
RF raised face ends
... equal-welded 有焊缝 RF raised face ends 凸面法兰 FF flat face ends 立体法兰 ...
RF
... 国标不锈钢球阀主要外型尺寸 Main outer Size 凸面法兰 RF 国标不锈钢球阀规格主要尺寸 Size Main Dimensions ...